web: landing page vanilla HTML/CSS/JS avec ambiance sous-marine

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

web/js/main.js

@@ -0,0 +1,32 @@
+// DauphinCraft — main.js (vanilla, no deps)
+
+// Intersection Observer — fade-in sections
+const observer = new IntersectionObserver(
+  (entries) => entries.forEach(e => {
+    if (e.isIntersecting) { e.target.classList.add('visible'); observer.unobserve(e.target); }
+  }),
+  { threshold: 0.12 }
+);
+document.querySelectorAll('.fade-in').forEach(el => observer.observe(el));
+
+// Copy server IP to clipboard
+function copyServerIP() {
+  const ip = document.getElementById('server-ip').textContent;
+  const btn = document.getElementById('btn-copy');
+  if (!navigator.clipboard) { return; }
+  navigator.clipboard.writeText(ip).then(() => {
+    btn.classList.add('copied');
+    btn.querySelector('svg').style.display = 'none';
+    const original = btn.innerHTML;
+    btn.textContent = 'Copié !';
+    setTimeout(() => { btn.innerHTML = original; btn.classList.remove('copied'); }, 2000);
+  });
+}
+
+// Close mobile menu when a nav link is clicked
+document.querySelectorAll('.nav-links a').forEach(a => {
+  a.addEventListener('click', () => {
+    const toggle = document.getElementById('nav-toggle');
+    if (toggle) toggle.checked = false;
+  });
+});